| Source | Variables | Coverage | Reference |
|:-------|:----------|:---------|:----------|
| UN WPP 2024 | Population by 5-year age group | 237 countries, 1950-2100 | @unwpp2024 |
| IMF WEO (Apr 2025) | CA/GDP, fiscal balance, GDP growth, output gap | 196 countries, 1980-2030 | |
| Penn World Tables 10.0 | Output per worker, human capital | 183 countries, 1950-2019 | @pwt100 |
| World Bank WDI | Health expenditure, life expectancy | 193 countries, 1970-2023 | |
| Chinn-Ito KAOPEN | Financial openness index | 181 countries, 1970-2023 | @chinn2006 |
| Lane & Milesi-Ferretti EWN | Net foreign assets / GDP | 212 countries, 1970-2024 | @lane2007 |
| IMF MFS\_IR | Lending and money market rates | 150 countries, 1970-2024 | |
| FRED | Government bond yields, short rates | 23 OECD countries, 1970-2025 | |
| OECD SOCX | Old-age public spending / GDP | 42 OECD countries, 1980-2024 | |
| World Bank ASPIRE | Social insurance coverage | 118 countries, 1999-2023 | |
